3-channel gps/glonass/galileo/beidou/irnss/qzss s/l1/l2/l3...

NT2024.1

Ver. 1.0 January 2017 www.ntlab.com

3-Channel GPS/GLONASS/Galileo/BeiDou/IRNSS/QZSS S/L1/L2/L3/L5 bands RF Front End

SPECIFICATION 1 FEATURES Overall 3 independent, fully customizable channels 3 coherent fractional-N PLLs with fully integrated VCOs and auto-tuning system Clock output for correlator with programmable frequency, amplitude and DC level Pass-through TCXO reference signal output I2C interface Embedded temperature sensor Few external components 12x12mm QFN108 package

Channels #1 and #2 feature list: Single conversion super heterodyne structure channels Integrated LNA Integrated active antenna input buffer including short-protected antenna supply circuit Tunable passband with auto-calibration system Output signal manual selection: complex or real with separate upper and lower sideband Analog differential output or 2-bit ADC digital output with programmable thresholds and

output logic high level 3-wire SPI access to control registers

Channel #3 feature list: Direct conversion structure channel for S-band IRNSS reception Dual AGC system (RF + IF) or manually programmable gain Wide dynamic range with 1dB compression point up to +7 dBm Receiving RTK data over FM 65…110 MHz, VHF 160…240 MHz, UHF 470…862

MHz bands

2 APPLICATION Navigation systems Portable receivers Mobile communication Measuring equipment

3 OVERVIEW NT2024 is a 3-channel RF Front End that covers all GNSS (GLONASS, IRNSS, GPS, Galileo, BeiDou, QZSS) signals at all frequency bands. It makes possible to benefit from all the advantages of acquiring multiple systems. Channels #1 and #2 are designed with single conversion low-IF architecture, individually programmable and intended to receive either L1, E1, B1 or E6, B3, L2, L3, B2, L5, E5 in different combinations. IQ and image suppression modes are available, other options can be discovered in feature list. Channel #3 is dedicated to operate on S band of IRNSS and has zero-IF architecture. This special addition makes possible

NT2024.1 3-Channel GPS/GLONASS/Galileo/BeiDou/IRNSS/QZSS

S/L1/L2/L3/L5 bands RF Front End

Ver. 1.0 page 2 of 13 www.ntlab.com

to effectively eliminate ionospheric distortion utilizing large signal base of IRNSS between L5 and S bands. As alternative, channel#3 can be software-reconfigured to receive real-time corrections data transmitted over FM, VHF and UHF bands. NT2024 does also integrate 3 fractional-N synthesizers that have the common reference (TCXO) input making LO signals coherent in terms of frequency. Wide list of attractive features and high level of customization make NT2024 capable to meet a demand of researchers and OEM developers in special applications: high precision positioning, goniometric, driverless car systems, professional drones and related areas.




4 TYPICAL APPLICATION 4.1 APPLICATION EXAMPLE 1




4.2 APPLICATION EXAMPLE 2




5 LAYOUT DESCRIPTION IC dimensions are given in the table 2 Table 1: Block dimensions

Dimension Value Unit Height 6 735 um Width 6 445 um

Figure 1: Block layout




6 OPERATING CHARACTERISTICS 6.1 TECHNICAL CHARACTERISTICS Technology ______________________________________________TSMC BiCMOS 0.18 um Status __________________________________________________________ silicon proven Area_________________________________________________________________ 43.5 mm2

6.2 DC ELECTRICAL CHARACTERISTICS The values of electrical characteristics are specified for Vcc = 2.8 V to 3.6V, Ta =-40…+85°C. Typical values are at Vcc = 3.0 V, Ta =+27°C, unless otherwise specified.

Parameter Symbol Condition Value Unit min typ. max Overall

Supply voltage Vcc - 2.8 3.0 3.6 V

Current consumption Icc

Mode 1 - 62 -

mA

Mode 2 - 144 - Mode 3 - 137 - Mode 4 - 31 - Mode 5 - 33 - Mode 6 - 82 -

Istb Stand-by mode - - 2.0 uA Die temperature measurement range Tj - -40 27 +100 °С

Die temperature measurement accuracy ∆Tj - - - ±5 °С

Temperature sensor DAC resolution K - - 10 - bit

Input logic-level high VIL - -0.25 - 0.3 V Input logic-level low VIH - 0.7Vcc - Vcc +0.25 V

Channels #1 and #2

AA output voltage drop ΔVAA From supply voltage Vcc. Nominal value. Note 1 - 0.16 - V

Short-circuit protection current IAS Nominal value. Note 2 - 16.0 - mA

AA detection current IAW Nominal value. Note 3 - 1.8 - mA

IFA output DC level VIFA_dif_ch1&2 - - Vcc-1.17 - V - - Vcc-1.36 -

Output logic-level high (digital output) VOH_dig For outputs ch1_Ip (Sign),

ch1_In (Magn), ch2_Ip (Sign), ch2_In (Magn). Load current 2 mA

Vcc-0.5 Vcc-0.2 Vcc V

Output logic-level low (digital output) VOL_dig 0 0.04 0.2 V

Clock output DC level VDC_CLK_ch1&

2

Preset1 - 1.16 - Vclk_ch1&2/4* -

V Preset2 - 1.74 - Vclk_ch1&2/4* - Preset3 - 2.32 - Vclk_ch1&2/4* - Preset4 - Vcc - Vclk_ch1&2/4* -

Channel #3

IFA output DC level VIFA_dif_ch3

Preset1 - Vcc–1.25 -

V Preset2 - Vcc–1.35 - Preset3 - Vcc–1.50 - Preset4 - Vcc–1.65 -

LNA AGC control voltage VAGCLNA

Maximum gain - Vcc - V Minimum gain - 0 -




Table “DC electrical characteristics” (continue) Parameter Symbol Condition Value Unit min typ. max

MIX AGC control voltage VAGCMix

Maximum gain - Vcc - V Minimum gain - 0 -

IF AGC control voltage VAGCIF Maximum gain - Vcc–0.1 - V Minimum gain - 0.1 -

Clock output DC level VDC_CLK_ch3

Preset1 - 1.10 – Vclk ch3/2** -

V Preset2 - 1.65 - Vclk ch3/2** - Preset3 - 2.25 - Vclk ch3/2** - Preset4 - Vcc - Vclk ch3/2** -

Notes: *- Vclk_ch1&2 refer to table «AC electrical characteristics» on page 16 **- Vclk_ch3 refer to table «AC electrical characteristics» on page 18 Notes: 1. Voltage drop value is evaluated from the equation ΔV = 0.1V + (2Ω×IAA), where IAA is active antenna current. 2. Current IAS = Imax, where Imax is active antenna maximal current 3. Current IAW = Imin, where Imin is active antenna minimal current

Modes: 1. Channel 1: L1 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV

Channel 2: L2 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 3: disable.

2. Channel 1: L1 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 2: L2 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 3: S band, IQ IRNSS, analog differential output, Vout_p-p = 430 mV

3. Channel 1: L1 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 2: L2 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 3: RTK.

4. Channel 1: L1 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 2: disabled; Channel 3: disabled.

5. Channel 1: disable; Channel 2: L2 band, IQ GNSS, analog differential output, Vout_p-p = 230 mV Channel 3: disable.

6. Channel 1: disabled; Channel 2: disabled; Channel 3: S band, IQ IRNSS, analog differential output, Vout_p-p = 430 mV




6.3 AC ELECTRICAL CHARACTERISTICS The values of electrical characteristics are specified for Vcc = 2.8 V to 3.6V, Ta =-40…+85°C. Typical values are at Vcc = 3.0 V, Ta =+27°C, unless otherwise specified.

Parameter Symbol Condition Value Unit min typ. max Overall

Reference frequency range FREF - 1 24.84 30 MHz Reference input level REFIN - 0.8 1 2 V

Channels #1 and #2 Overall

Input frequency range FIN L1 band 1530 - 1610 MHz L2, L3 or L5 band 1164 - 1300

Noise figure referred to LNA1 input NFIN_LNA1 GIF > 45 dB - 2.3 - dB

1dB compression point referred to LNA1 input P1dB_LNA1 GIFA = min. - -51 - dBm

Intercept point 3rd order referred to LNA1 input IIP3LNA1 GIFA = min. - -40 - dBm

Noise figure referred to LNA2 input NFIN_LNA2 GIFA = min. - 6.8 - dB

1dB compression point referred to LNA2 input P1dB_LNA2 GIFA = min. - -34 - dBm

Intercept point 3rd order referred to LNA2 input IIP3LNA2 GIFA = min. - -23 - dBm

Noise figure referred to mixer input NFIN_MIX GIF > 45 dB - 8 - dB

1dB compression point referred to mixer input P1dB_MIX GIFA = min. - -37 - dBm

Intercept point 3rd order referred to mixer input IIP3MIX GIFA = min. - -28 - dBm

LNA1

LNA1 noise figure NFLNA1 L1 band - 2.0 - dB L2, L3 or L5 band - 1.8 -

LNA1 gain GLNA1 L1 band - 14.3 - dB L2, L3 or L5 band - 14 -

LNA1 input VSWR VSWRLNA1_in 50 Ω L1 band - 1.5 - - L2, L3 or L5 band - 1.4 -

LNA1 output VSWR VSWRLNA1_out 50 Ω L1 band - 1.8 - - L2, L3 or L5 band - 2 -

LNA1 input 1dB compression point P1dB_LNA1

L1 band - -21 - dBm L2, L3 or L5 band - -25 - LNA1 intercept point 3rd order IIP3LNA1

L1 band - -10 - dBm L2, L3 or L5 band - -9 - Input impedance Rin LNA1 - - 50 - Ω Output impedance Rout LNA1 - - 50 - Ω LNA2

LNA2 noise figure NFLNA2 L1 band - 5.8 - dB L2, L3 or L5 band - 5.3 -

LNA2 gain GLNA2 L1 band - 1.29 - dB L2, L3 or L5 band - 2.1 -

LNA2 input VSWR VSWRLNA2_in 50 Ω L1 band - 1.6 - - L2, L3 or L5 band - 1.22 -

LNA2 output VSWR VSWRLNA2_out 50 Ω L1 band - 1.8 - - L2, L3 or L5 band - 1.65 -

LNA2 input 1dB compression point P1dB LNA2

L1 band - -4 - dBm L2, L3 or L5 band - -3.7 -




Table “AC electrical characteristics” (continue) Parameter Symbol Condition Value Unit min typ. max

LNA2 intercept point 3rd order IIP3LNA2 L1 band - 3.6 - L2, L3 or L5 band - 3.6 -

Input impedance Rin LNA2 - - 50 - Ω Output impedance Rout LNA2 - - 50 - Ω Mixer

Mixer input VSWR VSWRIN_MIX L1 band, 50 Ω, F = 1589.76 MHz - 2 -

- L2, L3 or L5 band, 50 Ω, F = 1217.16 MHz - 2 -

PPF

Image rejection IR L1 band - 28 - dB L2, L3 or L5 band - 30 -

LPF&IFA Sinusoidal/noise signal peak-to-peak voltage at the differential linear outputs

Vp-p 510 Ohm load resistance - 200/480 - mV

Gain G Minimal - 10 - dB Maximal - 58 -

AGC range ΔG - 48 - - dB Synthesizer LO frequency FLO Adjustable 1165 - 1606 MHz

LO phase noise PNLO

At 10 kHz frequency offset, FREF = 24.84 MHz

L1 band - -89 -

dBc/Hz

L2, L3 or L5 band - -89 - At 100 kHz frequency offset, FREF = 24.84 MHz

L1 band - -91.5 - L2, L3 or L5 band - -89 -

At 1 MHz frequency offset, FREF = 24.84 MHz

L1 band - -111 - L2, L3 or L5 band - -116 -

Clock frequency FCLK FLO/R, where R = CDIV<9:0> 1.55 - 198.72 MHz

Peak-to-peak voltage at the clock output at typical frequency

Vclk_ch1&2

Preset1, ECL

-

0.50

-

V

Preset2, ECL 0.72 Preset3, ECL 0.91 Preset4, ECL 1.07 Preset5, CMOS

-

0.91

- Preset6, CMOS 1.60 Preset7, CMOS 2.28 Preset8, CMOS 2.95

Channel #3 Overall

Input frequency range FIN_ch3

IRNSS S-band 2170 - 2500

MHz FM 65 - 110 VHF 160 - 240 UHF 470 - 862

Noise figure NFch3

IRNSS S-band - 7.1 -

dB FM - 4.5 - VHF - 4.5 - UHF - 4.0 -

Input VSWR VSWRIN_ch3 50 Ω

IRNSS S-band - 4.0 -

- FM - 1.8 - VHF - 2.0 - UHF - 2.0 -




Table “AC electrical characteristics” (continue) Parameter Symbol Condition

Value Unit min typ. max

Input 1dB compression point P1dBRF_ch3 IRNSS S-band

GRF = max, GIF =min - -17 -

dBm GRF = min, GIF =min 13

FM, VHF, UHF GRF = max, GIF =min - -28 - GRF = min, GIF =min 10

Intercept point 3rd order IIP3RF_ch3 IRNSS S-band

GRF = max, GIF =min - -9 -

dBm GRF = min, GIF =min 22

FM, VHF, UHF GRF = max, GIF =min - -20 - GRF = min, GIF =min 20

Overall voltage gain Gch3 - - 90 - dB IQ phase accuracy Δφch3 I/Q phase error at 1 MHz -3 - +3 degrees

LNA AGC range ΔGLNA_ch3 IRNSS S-band

G = max - 16.4 -

dB G = min -11.7

FM, VHF, UHF G = max

- 18.1 - G = min -17

MIX AGC range ΔGMix_ch3 IRNSS S-band

G = max - 7.0 -

dB G = min 3.0

FM, VHF, UHF G = max

- 11.6 - G = min 3.0

IFA AGC range ΔGIFA G = max

- -7 - dB G = min 73

IFA&LPF

Nominal output voltage Vout_ch3

Minimal - 150 - mV Default - 430 -

Maximal - 1500 - IQ amplitude output voltage accuracy ΔAch3 - - 28.5 - mV

Stopband attenuation SA Fcut_LPF = 3.80 MHz F = 6 MHz - 20 - dB F = 8 MHz - 39 -

Output impedance Rout Differential - 1.5 - kΩ

LPF bandwidth BWLPF

Fcut_LPF = 1.60 MHz - 1.6 - MHz Fcut_LPF = 3.80 MHz - 3.8 -

Fcut_LPF = 4.90 MHz - 4.9 - Synthesizer

LO phase noise PNLO_ch3


IRNSS S-band - -85 -

dBc/Hz

FM - -108 - VHF - -103 - UHF - -95 -


IRNSS S-band - -87 - FM - -110 - VHF - -105 - UHF - -98 -

At 1 MHz frequency offset, FREF = 24.84 MHz

IRNSS S-band - -115 - FM - -130 - VHF - -128 - UHF - -117 -

N divider ratio N IRNSS S-band 56 - 2047 - FM 16 - 1023

Fractional-N resolution Res - - 24 - bit R divider ratio R - 1 - 31 -




Table “AC electrical characteristics” (continue) Parameter Symbol Condition

Value Unit min typ. max

VCO frequency range FVCO VCO 1 900 - 1300

MHz VCO 2 1250 - 1820 VCO 3 4340 - 5000

Comparison frequency FCPC - 1 24.84 30 MHz

Peak-to-peak voltage at the clock output at typical frequency

Vclk_ch3

Preset1, ECL - 0.57 -

V

Preset2, ECL - 0.85 - Preset3, ECL - 1.14 - Preset4, ECL - 1.38 - Preset5, CMOS - 1.12 - Preset6, CMOS - 1.70 - Preset7, CMOS - 2.25 - Preset8, CMOS - Vcc -

7 DELIVERABLES IP contents: Datasheet Layout View (GDSII) Evaluation kit based on packaged IC Characterization Report Behavioral Model SPICE netlist (.cdl) Integration Support

3-channel gps/glonass/galileo/beidou/irnss/qzss s/l1/l2/l3...

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